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14 March, 15:40

If a circle has a circumference of 81.64 cm, what is the radius?

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Answers (2)
  1. 14 March, 17:49
    0
    c = Circumference=pid = 81.64 To find the radius of a circle you can just divide the diameter by 2.

    pi = 3.14

    d = diameter=c/3.14 Pi is always 3.14 or 22/7.

    d = 81.64/3.14

    d = 26

    r = radius = 26/2

    radius=13 cm
  2. 14 March, 17:59
    0
    Answer:13cm
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